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  <title>3dtiles模型矢量叠加单体化 |Mars3D|三维地图| 火星科技|合肥火星科技|合肥火星科技有限公司</title>

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  <div id="mars3dContainer" class="mars3d-container"></div>



  <script src="./js/common.js"></script>
  <script type="text/javascript">
    'use script' //开发环境建议开启严格模式

    var map

    function initMap(options) {
      //合并属性参数，可覆盖config.json中的对应配置
      var mapOptions = mars3d.Util.merge(options, {
        scene: {
          //此处参数会覆盖config.json中的对应配置
          center: {
            y: 31.561722,
            x: 120.848645,
            z: 75.58,
            heading: 52.9,
            pitch: -43.5,
            roll: 0.2,
          },
        },
      })

      //创建三维地球场景
      map = new mars3d.Map('mars3dContainer', mapOptions)

      //添加参考三维模型
      var tilesetLayer = new mars3d.layer.TilesetLayer({
        type: '3dtiles',
        name: '河道边厂房',
        url: 'http://data.marsgis.cn/3dtiles/qx-xiaolou/tileset.json',
        maximumScreenSpaceError: 1,
        maximumMemoryUsage: 1024,
        position: { alt: 1.5 },
        show: true,
      })
      map.addLayer(tilesetLayer)

      createDantihuaLayer()

      //添加叠加的单体化数据（geojson）
      $.ajax({
        type: 'get',
        dataType: 'json',
        url: 'http://data.marsgis.cn/file/geojson/dth_fcfh.json',
        success: function (featureCollection) {
          addDantihuaData(featureCollection.features)
        },
        error: function (XMLHttpRequest, textStatus, errorThrown) {
          haoutil.alert('Json文件加载失败！')
        },
      })
    }

    var graphicLayer

    var highlighColor = Cesium.Color.fromCssColorString('#00ff00').withAlpha(0.5) //高亮时颜色
    var nullColor = new Cesium.Color(0.0, 0.0, 0.0, 0.01)

    //创建单体化图层
    function createDantihuaLayer() {
      //创建Graphic图层
      graphicLayer = new mars3d.layer.GraphicLayer()
      map.addLayer(graphicLayer)

      graphicLayer.bindPopup(function (event) {
        var data = event.graphic.attr
        return mars3d.Util.getTemplateHtml({ title: '楼层', template: 'all', attr: data })
      })

      graphicLayer.on(mars3d.EventType.mouseOver, function (event) {
        console.log('监听layer，鼠标移入了矢量对象', event)
        var attributes = event.graphic?.geometryInstanceAttributes
        if (attributes) {
          attributes.color = Cesium.ColorGeometryInstanceAttribute.toValue(highlighColor)
        }
      })
      graphicLayer.on(mars3d.EventType.mouseOut, function (event) {
        console.log('监听layer，鼠标移出了矢量对象', event)

        var attributes = event.graphic?.geometryInstanceAttributes
        if (attributes) {
          attributes.color = Cesium.ColorGeometryInstanceAttribute.toValue(nullColor)
        }
      })
    }

    //添加单体化矢量对象
    function addDantihuaData(features) {
      //循环每个面
      for (var i = 0; i < features.length; i++) {
        var geojson = features[i]
        var points = geojson.geometry.coordinates[0]
        var floor = geojson.properties.floor //楼层层高配置信息

        //循环每一层
        for (var j = 0, len = floor.length; j < len; j++) {
          var floorCfg = floor[j]

          var minHight = floorCfg.bottom
          var maxHight = floorCfg.top

          var primitive = new mars3d.graphic.PolygonPrimitive({
            positions: points,
            style: {
              height: minHight,
              extrudedHeight: maxHight,
              color: nullColor,
              classification: true,
            },
            attr: floorCfg,
          })
          graphicLayer.addGraphic(primitive)
        }
      }
    }
  </script>
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